@misc{1190581, author = {H O Wyckoff and F H Attix}, title = {Design of free-air ionization chambers:}, year = {1957}, month = {1957-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.HB.64}, language = {en}, }